Sewing-machine



(No Model.)

G A STILES SEWING MACHINE.

Patented Dec. 30,1890

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' UNITED STATES PATENT OFFICE.

GEORGE A. STILES, OF BROOKLINE, ASSIGNOR TO JUSTUS \V. FRENCH, OF LYNN,MASSACHUSETTS.

SEWING-MACHINE.

SPECIFICATION forming part of Letters Patent No; 443,655, dated December30, 1890.

Application filed May 12, 1890. Serial No. 351,474. (No model.)

To all whom it may concern: I

Be it known that I, GEORGE A. STILES, of Brookline, county of Norfolk,State of Massachusetts, have invented an Improvementin Sewing-Machines,of which the following description, in connection with the accompany ingdrawings, is a specification, like letters and figures on the drawingsrepresentinglike parts.

This invention relates to what is known as wax-thread sewing-machines,my particular invention therein being in a peculiar construction of thepost and-presser-foot, whereby the same is adapted to hold the materialto be stitched together-as, for instance, the upper and a part of a solewhen making a shoe after what is called the French process, as fullydescribed in United States Patent No. 379,640, dated March 20, 1888. Ihave also provided the machine with a cutter by which to trim the edgeof the upper and sole parallel to the line of stitching uniting them.

Figure 1, in front elevation, shows a sufficient portion of awaX-threadsewing-machine with my improvements added to enable the same to beunderstood; Fig. 2, a left-hand side view of part of the machine shownin Fig. 1; Fig. 3, a top or plan view of the post; Fig. 4, a top or planview of the foot; and Fig. 5, an enlarged section of the rest and foot,together with a last, a sole and upper thereon in section, and a needle,to thus show the parts in working position.

The frame-work A,including the overhanging arm A, (but partially shown,)the awlbar A having the awl a, the presser-bar B, the spring B to keepthe presser-bar down, the rocking frame C, on which slides theneedle-bar I), having the needle I), and the castoff bar 0, having thecast-off c, the link 0 the arm 0 the rock-shaft c for moving theneodle-bar, the arm d of the rock-shaft d to reciprocate the awl-bar,are and may be all as common in wax-thread sewing-machines now commonlyin use and known to the trade as the National.

In accordance with my invention I have added to the Presser-bar of thisusual form of wax-thread machine a presser 6, having a thin narrow foot6 and a hooked toe e the needle in its passage through the material andwhen feeding the same while the frame (J is rocked traveling in the slot6 The post f as remodeled for the work to be done on this machine has avery narrow throat or rest 2, provided with a projection 3 at one end ofthe recess or slot 4.

In the manufacture of shoes after what is known as the French processand as provided for in said United States patent, the inner sole isslitted in from its edge at two places between the toe and shankthereof, and a portion of the said sole between the said cuts at bothedges of the ball of the sole are turned over and the edge of the upperis stitched to the said turned-over portions of the sole. To do thisstitching quickly I have devised the machine herein described. Theoverturned part of the inner sole along the ball thereof and the upperare interposed be tween the narrow portion a of the presserfoot and thenarrow portion 2 of the post, the hooked parts 6 and 3 acting as gagesagainst the inner sole on the bottom of the last and against the upperon the last to determine the distance of the scam in the said turnedoverportions from the main edge of the inner sole. The edge of theoverturned part of the sole stitched to the upper is subsequently cutoff, so that when the inner sole is being sewed to the outer sole alongthe ball of the sole the stitches pass for a part of the length of theshoes only through the outer sole and upper, as in the said patent. Todo this trimming automatically I have provided the post with an ear inwhich is placed the fulcrum f of the lever f provided at its upper endwith a blade or cutter J. The lower end of the lever f is forked toembrace an eccentric or cam projection g, (represented by dotted lines,Fig. 1,) which projection is embraced by the said lever, the saidprojection in the operation of the rock-shaft actuating the lever fcausing the blade to trim the sole and upper parallel to the seam. Thefoot f of the post is attached to the framework by a boltf The post hasan attached shield or guard S, against which the face of the inner soleon the last is held, while the portions of the inner sole and upper tobe stitched together are put into position. between the top of the postand the presser from the front of the machine. It will be noticed thatthe top of the rest and bottom of the foot are inclined backwardly fromthe front of the machine to thus insure the retention of the lip of theinner sole on the post and keep the face of the inner sole up againstthe shield.

The machine herein described will in practice be provided with the usualthread-guide to present a thread to the hook of the needle and withusual tension mechanism for the said thread.

I claim- 1. The combination, with the needle-bar and the needle thereinand the guard orshield for the face of the inner sole, of a presser foothaving its under side beveled and a resthaving its npperside beveled, tooperate substantially as described.

2. The combination, with a needle-bar, a needle therein, and apressenbar, of a narrow foot e, having a hooked toe c and a posthaving anarrow top with a projection 3, the under side of the said presser-footand the top of the said rest being bevcled,as represented, to operatesubstantially as described.

The combination, with the needle-bar and the needle therein and theguard or shield for the face of the inner sole, of a presser-foot havingits under side beveled and a rest having its upper side beveled, andwith a blade or cutter, a lever located below the top of the post, andmeans to actuate the said lever to trim the inner sole and upperparallel to the line of stitching, uniting the said inner sole andupperalong the ball of the shoe, substantially as described.

In testimony whereof I have signed my name to this specification in thepresence of two subscribing witnesses.

GEO. A. SIIIIES.

Witnesses:

GEO. W. Gnneonv, EMMA J. lmnnn'r'r.

